The bats will poop on you if you are below the bridge at dusk. Heads up. I’ve been on party cruises near the bridge for sunset and everyone quickly went from the top deck to the bottom as soon as the bats came out. The Mexican free-tailed bats live under the Congress Bridge in spring, summer, and early fall and head south in the winter.
Check out Capital Cruises or Lonestar Riverboat for tours on Lady Bird Lake.